TWI553642B - Methods for executing data access commands and flash memory devices using the same - Google Patents

Methods for executing data access commands and flash memory devices using the same Download PDF

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TWI553642B
TWI553642B TW102145803A TW102145803A TWI553642B TW I553642 B TWI553642 B TW I553642B TW 102145803 A TW102145803 A TW 102145803A TW 102145803 A TW102145803 A TW 102145803A TW I553642 B TWI553642 B TW I553642B
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interface
control unit
command
random access
access memory
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TW102145803A
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Chinese (zh)
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TW201523617A (en
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張佑全
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慧榮科技股份有限公司
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Priority to TW102145803A priority Critical patent/TWI553642B/en
Priority to CN201410074908.7A priority patent/CN104714892B/en
Priority to US14/514,762 priority patent/US9959232B2/en
Publication of TW201523617A publication Critical patent/TW201523617A/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38Information transfer, e.g. on bus
    • G06F13/382Information transfer, e.g. on bus using universal interface adapter
    • G06F13/385Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11CSTATIC STORES
    • G11C7/00Arrangements for writing information into, or reading information out from, a digital store
    • G11C7/10Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
    • G11C7/1072Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers for memories with random access ports synchronised on clock signal pulse trains, e.g. synchronous memories, self timed memories

Description

資料存取命令執行方法以及使用該方法的快閃記憶體裝置 Data access command execution method and flash memory device using the same

本發明關連於一種快閃記憶體裝置,特別是一種資料存取命令執行方法以及使用該方法的快閃記憶體裝置。 The present invention relates to a flash memory device, and more particularly to a data access command execution method and a flash memory device using the same.

傳統上,為了執行存取快閃記憶體中儲存單元的資料的命令,執行於快閃記憶體中的韌體需要使用一段連續的時間來寫暫存器,用以驅動控制單元完成一連串喚起(assert)、釋放(de-assert)儲存單元存取介面中的特定控制訊號或者是載入關聯於存取動作的位址、參數、資料等。這通常需要連續寫入五到二十個不等的暫存器,且這段時間通常不能被中斷。在這樣的設計下,不利於韌體對於多筆資料存取命令的排程最佳化,使得資料存取的效率較難提升。因此,本發明提出一種資料存取命令執行方法以及使用該方法的快閃記憶體裝置,用以降低寫入暫存器所需的連續時間,使得韌體可擁有較高的彈性來最佳化多個資料存取命令的排程。 Traditionally, in order to execute a command to access data of a storage unit in a flash memory, the firmware executing in the flash memory needs to use a continuous period of time to write to the scratchpad to drive the control unit to complete a series of wakes ( Assert), de-assert a specific control signal in the storage unit access interface or load an address, parameter, data, etc. associated with the access action. This usually requires five to twenty consecutive registers to be written, and this time cannot usually be interrupted. Under such a design, it is disadvantageous for the firmware to optimize the scheduling of multiple data access commands, making the data access efficiency more difficult to improve. Therefore, the present invention provides a data access command execution method and a flash memory device using the same, which are used to reduce the continuous time required for writing to the scratchpad, so that the firmware can be optimized with higher elasticity. Scheduling of multiple data access commands.

本發明的實施例提出一種資料存取命令執行方法,由控制單元執行,包含下列步驟。當從暫存器中偵測到改變指令來源指示後,從隨機存取記憶體讀取一系列介面驅動指 令。依據上述介面驅動指令依序操作儲存單元存取介面,用以完成對儲存單元的資料存取。 Embodiments of the present invention provide a data access command execution method, which is executed by a control unit, and includes the following steps. After detecting the change instruction source indication from the scratchpad, reading a series of interface driver fingers from the random access memory make. The storage unit access interface is sequentially operated according to the interface driver command to complete data access to the storage unit.

本發明的實施例提出一種快閃記憶體裝置的裝置,包含儲存單元存取介面、暫存器、隨機存取記憶體以及控制單元。控制單元耦接於暫存器、隨機存取記憶體與儲存單元存取介面之間。控制單元當從暫存器中偵測到改變指令來源指示後,從隨機存取記憶體讀取一系列的介面驅動指令;以及依據介面驅動指令依序操作儲存單元存取介面,用以完成對儲存單元的資料存取。 Embodiments of the present invention provide a device for a flash memory device, including a memory cell access interface, a scratchpad, a random access memory, and a control unit. The control unit is coupled between the register, the random access memory, and the storage unit access interface. After detecting the change instruction source indication from the temporary register, the control unit reads a series of interface driving instructions from the random access memory; and sequentially operates the storage unit access interface according to the interface driving instruction to complete the pair Data access to the storage unit.

本發明的實施例另提出一種資料存取命令執行方法,由被載入於微處理單元中之韌體執行,包含下列步驟。寫入一系列介面驅動指令至隨機存取記憶體,而非寫入至暫存器。寫入改變指令來源指示至暫存器,用以指示控制單元從隨機存取記憶體中讀取介面驅動指令並且據以依序操作儲存單元存取介面。 An embodiment of the present invention further provides a data access command execution method, which is executed by a firmware loaded in a micro processing unit, and includes the following steps. Write a series of interface drive instructions to the random access memory instead of writing to the scratchpad. The write change instruction source indication is sent to the temporary register to instruct the control unit to read the interface drive instruction from the random access memory and sequentially operate the storage unit access interface.

10‧‧‧快閃記憶體的系統架構 10‧‧‧System architecture of flash memory

110‧‧‧快閃記憶體控制器 110‧‧‧Flash Memory Controller

111‧‧‧處理單元存取介面 111‧‧‧Processing unit access interface

112‧‧‧微處理單元 112‧‧‧Microprocessing unit

113‧‧‧暫存器 113‧‧‧ register

114‧‧‧隨機存取記憶 114‧‧‧ Random Access Memory

115‧‧‧多工器 115‧‧‧Multiplexer

116‧‧‧控制單元 116‧‧‧Control unit

117‧‧‧儲存單元存取介面 117‧‧‧Storage unit access interface

120‧‧‧儲存單元 120‧‧‧ storage unit

121‧‧‧記憶體單元陣列 121‧‧‧Memory Cell Array

122‧‧‧行解碼單元 122‧‧‧ line decoding unit

123‧‧‧列編碼單元 123‧‧‧ column coding unit

124‧‧‧位址單元 124‧‧‧ Address Unit

125‧‧‧資料緩衝器 125‧‧‧ data buffer

310a~310e‧‧‧介面驅動指令 310a~310e‧‧‧Interface driver command

320‧‧‧資料線 320‧‧‧Information line

320a‧‧‧寫入命令 320a‧‧‧Write command

320b、320c‧‧‧寫入位址 320b, 320c‧‧‧ write address

330‧‧‧命令提取致能控制訊號 330‧‧‧Command extraction enable control signal

340‧‧‧位址提取致能控制訊號 340‧‧‧ address extraction enable control signal

350‧‧‧晶片致能控制訊號 350‧‧‧ wafer enable control signal

360‧‧‧寫入致能控制訊號 360‧‧‧Write enable control signal

360a、360b‧‧‧轉態訊號 360a, 360b‧‧‧Transformation signal

S410~S440‧‧‧方法步驟 S410~S440‧‧‧ method steps

S610~S650‧‧‧方法步驟 S610~S650‧‧‧ method steps

710a、710b‧‧‧紀錄於隨機存取記憶體中的介面驅動指令的起始位址 710a, 710b‧‧‧ The starting address of the interface-driven instruction recorded in random access memory

710c‧‧‧介面驅動指令的數目 Number of interface driver instructions for 710c‧‧

710d‧‧‧改變指令來源指示 710d‧‧‧Change instruction source indication

第1圖係依據本發明實施例之快閃記憶體的系統架構示意圖。 1 is a schematic diagram of a system architecture of a flash memory according to an embodiment of the present invention.

第2圖係依據本發明實施例之快閃記憶體中的儲存單元示意圖。 2 is a schematic diagram of a storage unit in a flash memory according to an embodiment of the present invention.

第3圖係依據本發明實施例之使用填寫暫存器的方式寫入資料至儲存單元的時序圖。 Figure 3 is a timing diagram of writing data to a storage unit in a manner of filling in a scratchpad in accordance with an embodiment of the present invention.

第4圖係依據本發明實施例之由韌體執行之介面驅動指令 產生方法的方法流程圖。 4 is an interface driving instruction executed by a firmware according to an embodiment of the present invention. A flow chart of the method of generating the method.

第5圖係依據本發明實施例之介面驅動指令儲存示意圖。 FIG. 5 is a schematic diagram of interface drive instruction storage according to an embodiment of the present invention.

第6圖係依據本發明實施例之由控制單元執行之介面驅動指令執行方法的方法流程圖。 Figure 6 is a flow chart of a method of performing an interface driven instruction execution method by a control unit in accordance with an embodiment of the present invention.

第7圖係依據本發明實施例之使用隨機存取記憶體預存介面驅動指令的方式寫入資料至儲存單元的時序圖。 FIG. 7 is a timing diagram of writing data to a storage unit in a manner of using a random access memory pre-stored interface driving instruction according to an embodiment of the present invention.

本發明提出一種資料存取命令執行方法以及使用該方法的快閃記憶體裝置,用以降低寫入暫存器所需的連續性時間,使得韌體可擁有較高的彈性來最佳化多筆資料存取命令。快閃記憶體裝置可以是安全數位卡(secure digital SD memory card)。第1圖係依據本發明實施例之快閃記憶體的系統架構示意圖。快閃記憶體的系統架構10中包含控制單元116,用以從暫存器113或隨機存取記憶114取得指令、存取位址、參數、資料或其他相關的資訊,並據以對儲存單元120進行存取。詳細來說,控制單元116透過儲存單元存取介面117寫入資料到儲存單元120中的特定位址,以及從儲存單元120中的特定位址讀取資料。系統架構10使用數個電子訊號來協調控制單元116與儲存單元120間的資料與命令傳遞,包含資料線(data line)、時脈訊號(clock signal)與控制訊號(control signal)。資料線可用以傳遞命令、位址、讀出及寫入的資料;控制訊號線可用以傳遞命令提取致能(command latch enable,CLE)、位址提取致能(address latch enable,ALE)、晶片致能(chip enable,CE)、寫入致能(write enable,WE)等控制訊號。微處理單元112另可使 用處理單元存取介面111透過特定通訊協定與其他電子裝置進行通訊,例如,通用序列匯流排(universal serial bus,USB)、先進技術附著(advanced technology attachment,ATA)或其他介面。 The present invention provides a data access command execution method and a flash memory device using the same, which are used to reduce the continuity time required for writing to the scratchpad, so that the firmware can have higher elasticity to optimize more. Pen data access command. The flash memory device can be a secure digital SD memory card. 1 is a schematic diagram of a system architecture of a flash memory according to an embodiment of the present invention. The system architecture 10 of the flash memory includes a control unit 116 for obtaining instructions, accessing addresses, parameters, data or other related information from the buffer 113 or the random access memory 114, and according to the storage unit. 120 access. In detail, the control unit 116 writes data to a specific address in the storage unit 120 through the storage unit access interface 117, and reads data from a specific address in the storage unit 120. The system architecture 10 uses a plurality of electronic signals to coordinate data and command transfer between the control unit 116 and the storage unit 120, including a data line, a clock signal, and a control signal. The data line can be used to pass commands, addresses, read and write data; the control signal line can be used to pass command latch enable (CLE), address latch enable (ALE), chip Control signals such as chip enable (CE) and write enable (WE). Micro processing unit 112 can additionally The processing unit access interface 111 communicates with other electronic devices through a specific communication protocol, for example, a universal serial bus (USB), an advanced technology attachment (ATA), or other interface.

第2圖係依據本發明實施例之快閃記憶體中的儲存單元示意圖。儲存單元120包含由MxN個記憶體單元(memory cells)組成的陣列(array)121,而每一個記憶體單元可以包含一或多個單一位準記憶體單元(single-level cell,SLC)或三位準記憶體單元(triple-level cell,TLC)。快閃記憶體可以是NOR型快閃記憶體(NOR flash memory)、NAND型快閃記憶體,或其他種類的快閃記憶體。為了正確存取資訊,行解碼單元122用以選擇記憶體單元陣列121中特定的行,而列編碼單元123用以選擇特定行中一定數量的位元組的資料作為輸出。位址單元124提供特定的行資訊給行解碼器122,其中定義選擇記憶體單元陣列121中的特定行的資訊。相似地,列解碼器123則根據位址單元124提供的列資訊,選擇記憶體單元陣列121的特定行中一定數量的列進行讀取或寫入操作。從記憶體單元陣列121讀取出的資料,或欲寫入記憶體單元陣列121中的資料則儲存在資料緩衝器(data buffer)125。 2 is a schematic diagram of a storage unit in a flash memory according to an embodiment of the present invention. The storage unit 120 includes an array 121 composed of MxN memory cells, and each memory unit may include one or more single-level cells (SLC) or three. Level-level cell (TLC). The flash memory can be a NOR flash memory, a NAND flash memory, or other types of flash memory. In order to correctly access the information, the row decoding unit 122 is used to select a particular row in the memory cell array 121, and the column encoding unit 123 is used to select a certain number of bytes in a particular row as the output. Address unit 124 provides specific row information to row decoder 122, which defines information for selecting a particular row in memory cell array 121. Similarly, column decoder 123 selects a certain number of columns in a particular row of memory cell array 121 for read or write operations based on the column information provided by address unit 124. The data read from the memory cell array 121 or the data to be written in the memory cell array 121 is stored in a data buffer 125.

於正常狀態下,多工器115會被組態為連接暫存器113至控制單元116。控制單元116會週期性地偵測暫存器113中是否存在一個新的介面驅動指令,是則據以改變儲存單元存取介面117的控制訊號、起始或結束儲存單元存取介面117的時脈訊號、放置資料於儲存單元存取介面117的資料線上、讀取儲 存單元存取介面117的資料線上的資料,或是以上操作的任意結合。儲存單元存取介面117可採用單倍資料率(single data rate,SDR)或雙倍資料率(double data rate,DDR)通訊協定,使儲存單元中的控制器(未顯示)與控制單元116間能彼此溝通,例如,開放NAND快閃(open NAND flash interface,ONFI)、雙倍資料率開關(DDR toggle)或其他介面。執行於微處理單元112的韌體為完成一個由處理單元存取介面111所指示的資料存取指令,可寫入一系列的介面驅動指令至暫存器113中,指示控制單元116完成對儲存單元存取介面117的操作,例如,讀取儲存單元120中一段位址的資料、寫入資料到儲存單元120中的一段位址上、合併儲存單元120中的特定頁面等。第3圖係依據本發明實施例之使用填寫暫存器的方式寫入資料至儲存單元120的時序圖。韌體116可依序寫入特定的值310a及310b至暫存器113中,用以指示控制單元116分別讀取寫入位址與相關參數設定。接著,於暫存器113中寫入特定的值310c,指示控制單元116喚醒儲存單元存取介面117中的晶片致能(CE)控制訊號350。當控制單元116偵測到暫存器113中被寫入特定的值310d後,喚起命令提取致能(CLE)控制訊號330,將寫入命令(program command)320a放置於資料線320上,以及產生寫入致能(WE)的轉態訊號(toggling signal)360a,讓儲存單元120中的控制器(未顯示)可以讀取存放在資料線320上的寫入命令320b。例如,控制單元116可於轉態訊號360a的上升緣(rising edges)於資料線320上取得寫入命令320a。當控制單元116偵測到暫存器113中被寫入特定的值310e後,喚起位址提取致能(ALE)控制訊號 340,將寫入位址(program address)320b與320c放置於資料線320上,接著產生寫入致能(WE)的轉態訊號(toggling signal)360b,讓儲存單元120中的控制器(未顯示)可以讀取存放在資料線320上的寫入位址320b。例如,控制單元116可於轉態訊號360b的上升緣以及/或下降緣(falling edge)於資料線320上取得寫入位址320b與320c。值310a至310e係代表一系列緊接著執行的介面驅動指令。為完成一個寫入命令,韌體必須安排一段足夠長的時間來完成這一系列介面驅動指令的暫存器113寫入動作。此外,為完成一個資料存取命令,介面驅動指令的數目可能多達二十個。 In the normal state, the multiplexer 115 will be configured to connect the register 113 to the control unit 116. The control unit 116 periodically detects whether a new interface driver command exists in the register 113, and accordingly, when the control signal of the storage unit access interface 117 is changed, and the storage unit access interface 117 is started or ended. Pulse signal, placement data on the data line of the storage unit access interface 117, read storage The data on the data line of the unit access interface 117 is stored, or any combination of the above operations. The storage unit access interface 117 can use a single data rate (SDR) or double data rate (DDR) communication protocol to enable a controller (not shown) in the storage unit and the control unit 116. Can communicate with each other, for example, open NAND flash interface (ONFI), double data rate switch (DDR toggle) or other interface. The firmware executed by the processing unit 112 is configured to complete a data access instruction indicated by the processing unit access interface 111, and a series of interface driving instructions can be written into the temporary memory 113 to instruct the control unit 116 to complete the storage. The operation of the unit access interface 117, for example, reading data of a bit address in the storage unit 120, writing data to a bit address in the storage unit 120, merging a specific page in the storage unit 120, and the like. FIG. 3 is a timing diagram of writing data to the storage unit 120 in a manner of filling in a scratchpad according to an embodiment of the present invention. The firmware 116 can sequentially write the specific values 310a and 310b to the temporary register 113 to instruct the control unit 116 to read the write address and related parameter settings, respectively. Next, a specific value 310c is written in the scratchpad 113, instructing the control unit 116 to wake up the wafer enable (CE) control signal 350 in the memory cell access interface 117. When the control unit 116 detects that the specific value 310d is written in the temporary memory 113, it evokes the command extraction enable (CLE) control signal 330, and places a program command 320a on the data line 320, and A write enable (WE) toggling signal 360a is generated to cause a controller (not shown) in the storage unit 120 to read the write command 320b stored on the data line 320. For example, the control unit 116 can obtain the write command 320a on the data line 320 at the rising edges of the transition signal 360a. When the control unit 116 detects that the specific value 310e is written in the register 113, the address extraction enable (ALE) control signal is evoked. 340. Place the program addresses 320b and 320c on the data line 320, and then generate a write enable (WE) toggling signal 360b to enable the controller in the storage unit 120 (not The write address 320b stored on the data line 320 can be read. For example, the control unit 116 can obtain the write addresses 320b and 320c on the data line 320 at the rising edge and/or the falling edge of the transition signal 360b. Values 310a through 310e represent a series of interface drive instructions that are executed immediately. To complete a write command, the firmware must schedule a period of time sufficient to complete the write operation of the register 113 of the series of interface drive instructions. In addition, the number of interface-driven instructions may be as many as twenty to complete a data access command.

為了要降低寫入暫存器所需的連續性時間,本發明實施例另提出一個預先定義的指令碼,有別於如上所述的介面驅動指令,用以指示控制單元116從隨機存取記憶體114中的一個特定起始位址讀取一定數目的介面驅動指令,並據以完成一個資料存取命令。此指令碼可稱為改變指令來源指示(indication for altering instruction source)。在寫入這個特殊的指令碼前,韌體需要於隨機存取記憶體114中儲存一系列的介面驅動指令,以及將儲存介面驅動指令的起始位址與介面驅動指令的數目寫入暫存器113中。第4圖係依據本發明實施例之由韌體執行之介面驅動指令產生方法的方法流程圖。微處理單元112中執行的韌體寫入一系列介面驅動指令至隨機存取記憶體114中(步驟S410),而非寫入至暫存器113中。韌體可在任意的時間點執行步驟S410,也可以一次寫入關聯於多個資料存取命令的介面驅動指令,例如,關聯於一個讀取資料命令以及一個 寫入資料命令的介面驅動指令。第5圖係依據本發明實施例之介面驅動指令儲存示意圖。如之前所述之介面驅動指令310a至310e可被儲存於隨機存取記憶體114中,起始位址為”’h0102”。韌體接著將儲存介面驅動指令的起始位址寫入到暫存器113(步驟S420),將介面驅動指令的數目寫入到暫存器113(步驟S430)。於需要驅動儲存單元存取介面117的時間點,韌體將改變指令來源指示寫入暫存器113(步驟S440),用以指示控制單元116從隨機存取記憶體114中讀取一定數目的介面驅動指令來完成一個資料存取命令。需注意的是,步驟S410的執行時間點可由韌體隨意安排,並不受限於於步驟S420至S440的實際執行時間。換句話說,韌體可事先儲存關聯於多個資料存取命令的介面驅動指令於隨機存取記憶體114中,然後在特定的時間點安排執行步驟S420至S440,用以觸發控制單元116進行介面驅動指令的讀取與執行。在完成寫入儲存介面驅動指令的起始位址、介面驅動指令的數目及改變指令來源指示至暫存器113後,韌體可以不需要等待介面驅動指令被控制單元116執行完畢,隨即執行其他的作業。 In order to reduce the continuity time required for writing to the temporary register, the embodiment of the present invention further provides a predefined instruction code, which is different from the interface driving instruction as described above, for instructing the control unit 116 to access the random access memory. A particular start address in body 114 reads a certain number of interface drive instructions and thereby completes a data access command. This instruction code may be referred to as an indication for altering instruction source. Before writing this special instruction code, the firmware needs to store a series of interface driving instructions in the random access memory 114, and write the starting address of the storage interface driving instruction and the number of interface driving instructions to the temporary storage. In the 113. 4 is a flow chart of a method for generating a interface driven instruction by a firmware according to an embodiment of the present invention. The firmware executed in the micro processing unit 112 writes a series of interface drive instructions into the random access memory 114 (step S410) instead of writing to the scratchpad 113. The firmware may perform step S410 at any point in time, or may write an interface driver instruction associated with multiple data access commands at a time, for example, associated with a read data command and a Interface driver instructions for writing data commands. FIG. 5 is a schematic diagram of interface drive instruction storage according to an embodiment of the present invention. The interface drive instructions 310a through 310e as previously described may be stored in the random access memory 114 with a start address of "'h0102". The firmware then writes the start address of the storage interface drive instruction to the scratchpad 113 (step S420), and writes the number of interface drive instructions to the scratchpad 113 (step S430). At a point in time when the storage unit access interface 117 is required to be driven, the firmware writes the change instruction source indication to the temporary storage unit 113 (step S440) to instruct the control unit 116 to read a certain number of the random access memory 114. The interface drives instructions to complete a data access command. It should be noted that the execution time point of step S410 can be arbitrarily arranged by the firmware, and is not limited to the actual execution time of steps S420 to S440. In other words, the firmware may store the interface driving instructions associated with the plurality of data access commands in the random access memory 114 in advance, and then perform steps S420 to S440 at a specific time point for triggering the control unit 116 to perform. Interface drive instructions are read and executed. After completing the write start address of the storage interface drive instruction, the number of interface drive instructions, and changing the instruction source indication to the scratchpad 113, the firmware may not need to wait for the interface drive instruction to be executed by the control unit 116, and then execute the other Homework.

第6圖係依據本發明實施例之由控制單元116執行之介面驅動指令執行方法的方法流程圖。當控制單元116於暫存器113中偵測到上述的改變指令來源指示(步驟S610)後,讀取暫存器113中紀錄的起始位址及介面驅動指令的數目(步驟S620)。暫存器113中的起始位址及介面驅動指令的數目係由韌體於執行步驟S420與S430時寫入。例如,暫存器113中所記錄的起始位址為”’h0102”且介面驅動指令的數目為”5”。接著,控 制多工器115用以將隨機存取記憶體114連接至控制單元116(步驟S630)。依據取得的起始位址及介面驅動指令的數目,從隨機存取記憶體114依序讀取介面驅動指令以及根據每一介面驅動指令完成對儲存單元存取介面的操作(步驟S640)。範例之儲存於隨機存取記憶體114中的介面驅動指令可參考第5圖。於讀取完介面驅動指令後,控制單元116控制多工器115用以將暫存器113連接至控制單元116(步驟S650),使得控制單元116可繼續週期性地偵測及讀取暫存器113中的值。 Figure 6 is a flow diagram of a method of performing an interface driven instruction execution method by control unit 116 in accordance with an embodiment of the present invention. When the control unit 116 detects the change instruction source indication in the register 113 (step S610), the number of the start address and the interface drive command recorded in the register 113 is read (step S620). The number of start addresses and interface drive commands in the scratchpad 113 is written by the firmware when performing steps S420 and S430. For example, the start address recorded in the scratchpad 113 is "'h0102" and the number of interface drive instructions is "5". Then, control The multiplexer 115 is used to connect the random access memory 114 to the control unit 116 (step S630). The interface driving instruction is sequentially read from the random access memory 114 and the operation of the storage unit access interface is completed according to each interface driving instruction according to the obtained starting address and the number of interface driving instructions (step S640). For example, the interface driving instructions stored in the random access memory 114 can be referred to FIG. After reading the interface driving command, the control unit 116 controls the multiplexer 115 to connect the register 113 to the control unit 116 (step S650), so that the control unit 116 can continue to periodically detect and read the temporary storage. The value in the 113.

第7圖係依據本發明實施例之使用隨機存取記憶體114預存介面驅動指令的方式寫入資料至儲存單元120的時序圖。韌體116可事先將一系列介面驅動指令儲存於隨機存取記憶體114中的特定位置(步驟S410)。在這個例子中,此介面驅動指令係用以完成寫入資料到儲存單元120中的一塊區域。在到達一個計劃之時間點時,韌體116可寫入儲存於隨機存取記憶體114中之一系列介面驅動指令的起始位址710a與710b至暫存器113(步驟S420),以及寫入介面驅動指令的數目710c至暫存器113(步驟S430)。起始位址710a與710b係使用十六個位元(兩個位元組)表示,熟習此技藝人士亦可以使用更多位元來進行定址,本發明並不因此而侷限。接著,將改變指令來源指示710寫入至暫存器113(步驟S440)。請參考第5圖,在這個例子中,起始位址是”’h0102”,並且此一系列的介面驅動指令的數目是五個。當辨識出暫存器113中的改變指令來源指示710d(步驟S610)後,讀取暫存器113中儲存的起始位址710a與710b以及介面驅動指令的數目710c(步驟S620)。控制單元116接著控制多工 器115將隨機存取記憶體114連接至控制單元116(步驟S630)。依據起始位址710a與710b以及介面驅動指令的數目710c,控制單元116從隨機存取記憶體114中依序讀出介面驅動指令並完成對儲存單元存取介面117的操作(步驟S640)。詳細對於儲存單元存取介面117中資料線320、命令提取致能控制訊號330、位址提取致能控制訊號340、晶片致能控制訊號350以及寫入智能控制訊號360的操作,請參考第3圖的說明。最後,控制單元116控制多工器115將暫存器113連接至控制單元116(步驟S650),用以繼續偵測新寫入暫存器113的值。 FIG. 7 is a timing diagram of writing data to the storage unit 120 in a manner of pre-storing interface driving instructions using the random access memory 114 according to an embodiment of the present invention. The firmware 116 may store a series of interface drive commands in a specific location in the random access memory 114 in advance (step S410). In this example, the interface driver command is used to complete writing an area of data into the storage unit 120. Upon reaching a scheduled time point, the firmware 116 can write the start addresses 710a and 710b of a series of interface drive instructions stored in the random access memory 114 to the scratchpad 113 (step S420), and write The number of interface driver instructions 710c is entered into the scratchpad 113 (step S430). The starting addresses 710a and 710b are represented by sixteen bits (two bytes), and those skilled in the art can also use more bits for addressing, and the present invention is not limited thereby. Next, the change instruction source indication 710 is written to the temporary memory 113 (step S440). Referring to Figure 5, in this example, the starting address is "'h0102" and the number of interface driver instructions for this series is five. When the change instruction source indication 710d in the temporary memory 113 is recognized (step S610), the start addresses 710a and 710b stored in the temporary memory 113 and the number 710c of the interface drive instructions are read (step S620). Control unit 116 then controls multiplex The device 115 connects the random access memory 114 to the control unit 116 (step S630). Based on the start addresses 710a and 710b and the number of interface drive instructions 710c, the control unit 116 sequentially reads out the interface drive commands from the random access memory 114 and completes the operation on the storage unit access interface 117 (step S640). For details on the operations of the data line 320, the command extraction enable control signal 330, the address extraction enable control signal 340, the chip enable control signal 350, and the write smart control signal 360 in the storage unit access interface 117, please refer to the third. Illustration of the figure. Finally, the control unit 116 controls the multiplexer 115 to connect the register 113 to the control unit 116 (step S650) for continuing to detect the value of the new write register 113.

雖然第1圖、第2圖中包含了以上描述的元件,但不排除在不違反發明的精神下,使用更多其他的附加元件,已達成更佳的技術效果。此外,雖然第4圖、第6圖的流程圖採用特定的順序來執行,但是在不違法發明精神的情況下,熟習此技藝人士可以在達到相同效果的前提下,修改這些步驟間的順序,所以,本發明並不侷限於僅使用如上所述的順序。此外,熟習此技藝人士亦可以將若干步驟整合為一個步驟,或者是除了這些步驟外,循序或平行地執行更多步驟,本發明亦不因此而侷限。 Although the above-described elements are included in the first and second figures, it is not excluded that more other additional elements are used without departing from the spirit of the invention, and a better technical effect has been achieved. In addition, although the flowcharts of FIGS. 4 and 6 are executed in a specific order, without knowing the spirit of the invention, those skilled in the art can modify the order among the steps while achieving the same effect. Therefore, the present invention is not limited to the use of only the order as described above. In addition, those skilled in the art may also integrate several steps into one step, or in addition to these steps, performing more steps sequentially or in parallel, and the present invention is not limited thereby.

雖然本發明使用以上實施例進行說明,但需要注意的是,這些描述並非用以限縮本發明。相反地,此發明涵蓋了熟習此技藝人士顯而易見的修改與相似設置。所以,申請權利要求範圍須以最寬廣的方式解釋來包含所有顯而易見的修改與相似設置。 Although the present invention has been described using the above embodiments, it should be noted that these descriptions are not intended to limit the invention. On the contrary, this invention covers modifications and similar arrangements that are apparent to those skilled in the art. Therefore, the scope of the claims should be interpreted in the broadest form to include all obvious modifications and similar arrangements.

S610~S650‧‧‧方法步驟 S610~S650‧‧‧ method steps

Claims (15)

一種資料存取命令執行方法,由一控制單元執行,包含:當從一暫存器中偵測到一改變指令來源指示後,從上述暫存器中讀取儲存於上述隨機存取記憶體中之上述介面驅動指令的一起始位址,以及上述介面驅動指令的一數目,以及控制一多工器將上述隨機存取記憶體連接至上述控制單元,其中,上述介面驅動指令的讀取係依據上述起始位址以及上述介面驅動指令的上述數目;以及依據上述介面驅動指令依序操作一儲存單元存取介面,用以完成對一儲存單元的資料存取。 A method for executing a data access command is executed by a control unit, and includes: after detecting a change instruction source indication from a temporary register, reading from the temporary storage device and storing in the random access memory a start address of the interface driver command, and a number of the interface drive commands, and a control multiplexer connecting the random access memory to the control unit, wherein the reading of the interface drive command is based on The foregoing starting address and the foregoing number of the interface driving instructions; and sequentially operating a storage unit access interface according to the interface driving instruction to complete data access to a storage unit. 如申請專利範圍第1項所述的資料存取命令執行方法,更包含:當從上述暫存器中偵測到上述改變指令來源指示後,控制一多工器將上述隨機存取記憶體連接至上述控制單元。 The method for executing a data access command according to claim 1, further comprising: controlling a multiplexer to connect the random access memory after detecting the change instruction source indication from the temporary register; To the above control unit. 如申請專利範圍第2項所述的資料存取命令執行方法,更包含:當從上述隨機存取記憶體中讀取上述介面驅動指令後,控制上述多工器將上述暫存器連接至上述控制單元。 The method for executing a data access command according to claim 2, further comprising: after reading the interface driving command from the random access memory, controlling the multiplexer to connect the temporary register to the above control unit. 如申請專利範圍第1項所述的資料存取命令執行方法,其中上述儲存單元存取介面的操作係包含操作一資料線以及/或一控制訊號線。 The data access command execution method of claim 1, wherein the operation of the storage unit access interface comprises operating a data line and/or a control signal line. 如申請專利範圍第1項所述的資料存取命令執行方法,其中上述隨機存取記憶體中之上述介面驅動指令係由執行於一微處理單元之一韌體所寫入。 The data access command execution method of claim 1, wherein the interface driver command in the random access memory is written by a firmware executed in a micro processing unit. 如申請專利範圍第1項所述的資料存取命令執行方法,其中上述改變指令來源指示係由執行於一微處理單元之一韌體所寫入。 The data access command execution method of claim 1, wherein the change instruction source indication is written by a firmware executed by one of the micro processing units. 一種快閃記憶體裝置,包含:一儲存單元存取介面;一暫存器;一隨機存取記憶體;一控制單元,耦接於上述暫存器、上述隨機存取記憶體與上述儲存單元存取介面之間;以及一多工器,耦接於上述暫存器、上述隨機存取記憶體與上述控制單元之間;其中,上述控制單元當從上述暫存器中偵測到一改變指令來源指示後,從上述暫存器中讀取儲存於上述隨機存取記憶體中之上述介面驅動指令的一起始位址,以及上述介面驅動指令的一數目,以及控制上述多工器將上述隨機存取記憶體連接至上述控制單元,其中上述介面驅動指令的讀取係依據上述起始位址以及上述介面驅動指令的上述數目;以及依據上述介面驅動指令依序操作上述儲存單元存取介面,用以完成對一儲存單元的資料存取。 A flash memory device, comprising: a storage unit access interface; a temporary storage device; a random access memory; a control unit coupled to the temporary storage device, the random access memory and the storage unit Between the access interfaces; and a multiplexer coupled between the temporary register, the random access memory and the control unit; wherein the control unit detects a change from the temporary memory After the command source indicates, reading a start address of the interface drive command stored in the random access memory from the scratchpad, and a number of the interface drive commands, and controlling the multiplexer to The random access memory is connected to the control unit, wherein the reading of the interface driving instruction is based on the starting address and the number of the interface driving instructions; and sequentially operating the storage unit access interface according to the interface driving instruction. For completing data access to a storage unit. 如申請專利範圍第7項所述的快閃記憶體裝置,更包含:一多工器,耦接於上述暫存器、上述隨機存取記憶體與上述控制單元之間; 其中上述控制單元當從上述暫存器中偵測到上述改變指令來源指示後,控制上述多工器將上述隨機存取記憶體連接至上述控制單元。 The flash memory device of claim 7, further comprising: a multiplexer coupled between the temporary memory, the random access memory and the control unit; The control unit controls the multiplexer to connect the random access memory to the control unit after detecting the change command source indication from the temporary register. 如申請專利範圍第8項所述的快閃記憶體裝置,其中上述控制單元當從上述隨機存取記憶體中讀取上述介面驅動指令後,控制上述多工器將上述暫存器連接至上述控制單元。 The flash memory device of claim 8, wherein the control unit, after reading the interface driving command from the random access memory, controls the multiplexer to connect the temporary register to the above control unit. 如申請專利範圍第7項所述的快閃記憶體裝置,其中上述儲存單元存取介面的操作係包含操作一資料線以及/或一控制訊號線。 The flash memory device of claim 7, wherein the operation of the storage unit access interface comprises operating a data line and/or a control signal line. 如申請專利範圍第7項所述的快閃記憶體裝置,其中上述隨機存取記憶體中之上述介面驅動指令係由執行於一微處理單元之一韌體所儲存。 The flash memory device of claim 7, wherein the interface driver command in the random access memory is stored by one firmware of a micro processing unit. 如申請專利範圍第7項所述的快閃記憶體裝置,其中上述改變指令來源指示係由執行於一微處理單元之一韌體所儲存。 The flash memory device of claim 7, wherein the change instruction source indication is stored by a firmware executed by one of the micro processing units. 一種資料存取命令執行方法,由被載入於一微處理單元中之一韌體執行,包含:寫入一系列介面驅動指令至一隨機存取記憶體,而非寫入至一暫存器中;以及寫入一改變指令來源指示至上述暫存器,用以指示一控制單元從上述隨機存取記憶體中讀取上述介面驅動指令並且據以依序操作一儲存單元存取介面。 A method for executing a data access command is executed by a firmware loaded in a micro processing unit, comprising: writing a series of interface driving instructions to a random access memory instead of writing to a temporary memory And writing a change instruction source indication to the temporary register to instruct a control unit to read the interface drive instruction from the random access memory and sequentially operate a storage unit access interface. 如申請專利範圍第13項所述的資料存取命令執行方法,更包含: 寫入儲存於上述隨機存取記憶體中之上述介面驅動指令的一起始位址,以及上述介面驅動指令的一數目至上述暫存器;其中上述控制單元依據上述起始位址以及上述介面驅動指令的上述數目讀取介面驅動指令。 The method for executing the data access command described in claim 13 of the patent application scope further includes: Writing a start address of the interface driver command stored in the random access memory, and a number of the interface drive commands to the register; wherein the control unit drives the interface according to the start address and the interface The above number of instructions reads the interface drive instruction. 如申請專利範圍第13項所述的資料存取命令執行方法,其中上述控制單元依據上述介面驅動指令操作上述儲存單元存取介面中的一資料線以及/或一控制訊號線。 The data access command execution method of claim 13, wherein the control unit operates a data line and/or a control signal line in the storage unit access interface according to the interface driving instruction.
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